import java.util.Scanner;
public class Fourth {
	public static void main(String[] args) {
	getCIRCLEarea( );
	}
	public static void getCIRCLEarea( ){
	Scanner sc=new Scanner(System.in);
	System.out.println("Enter the radius of circle:");
	double r =sc.nextDouble();
	System.out.println("The area of circle is:"+ (Math.PI*r*r));
	System.out.println("The circumference of circle is:"+(2*Math.PI*r));
	}
}